Let's try the Invisibility thing a different way

[jaF0]

Bear in mind the SciFi angle and that things don't really have to make sense in a real world way.

Work in some blackmail and manipulation.

Character is more a shapeshifter that can not only vanish but go to smoke or vapors to pass through small spaces and be fully noiseless.

He/she observes the prey and records video and audio of private or intimate moments without them knowing of the presence . Those are used to blackmail the prey. Despite their best efforts, they cannot figure out how the recordings were acquired. No evidence of planted spycams or microphones for instance.

Character is also able to drug and effectively hypnotize people to get them to do things that normally would not.

Character may not even be a real human in any sense; rather an imaginary being conducting behavioral experiments on Humans for some reason.

 

[RoyceConnors]

You're describing the story I'm writing now, Masters of Lavender Hill Mansion. A lesbian ghost story.

 

[Hypoxia]

The invisible / shapeshifting player needs some vulnerability or this becomes too much like most MC tedium. They need to risk something -- unless the tale is a stroker where plausibility and drama matter not. Omnipotence wears thin IMHO.

 

[jaF0]

So add a bit of vampire, but in the vane of one of the SciFi shows (Buck Rogers?) where it needs some of the essence of the victim's souls that can only be acquired during their orgasm.

If it doesn't get that, it risks death.

 

[Hypoxia]

So our shapeshifting soul-vampire doesn't really *need* to blackmail humans because she can just rifle their records, skim their accounts, and/or make off with whatever valuables are lying about. No, she doesn't *need* to -- she just does it for fun! (Naughty girl...) But she does *need* to drain their spiritual essences while they're mating, so she becomes an invisible partner in their lovemaking, enveloping the entwined 2- or 3- or 4-somes in her tenuous ecto-membrane, absorbing their orgone energy.

The moment of orgasm is when she is vulnerable. Somehow. I haven't worked that out.

 

[jaF0]

So our shapeshifting soul-vampire doesn't really *need* to blackmail humans because she can just rifle their records, skim their accounts, and/or make off with whatever valuables are lying about.

The Entity has no need for such things. It needs that special essence that can only be acquired when the victims are at peak arousal. Everything else it does (blackmail, manipulation, etc.) is to get the victims to that high climax moment, more or less by their own choosing whether they know it or not.

Since it can't directly interact, it has to create situations between the victims.

Maybe one of the motives is so that it CAN interact every so often ... perhaps once a year? But it needs to acquire a certain level of the essence to be able to.

 

[Sean Renaud]

Okay, so we're effectively talking about an incubus/succubus. It's limited to no direct interferance mechanics currently unimportant. However if it passes a certain threshold it is capable of interaction. Sounds fairly basic all things considered. It's the sex edition of like every single fear movie monster ever. It's not much different from Freddy in vs Jason. He's harmless until he reaches X power then he's a killer. Only this one can physically manifest (intentionally, which I guess Freddy could do he simply chooses not to because who the fuck wants to be limited to flesh and blood instead of being a reality warper?)

So there we've got the motivation worked out, the powers defined pretty well. Do we have any plans specifically for the victim(s) and what makes them particularly special? Cus the question then becomes why doesn't the succubus go to the nearest group of (eight)teenage males it can locate. I don't think I need to explain how incredibly little nudging would be necessary to get a bunch of high school boys to peak arousal.

I guess you could go with the Death Note solution. Which in a nutshell is that these beings are really functionally immortal and all powerful already. It has already fed on enough teens to survive until the stars grow cold but it's bored and comes up with needlessly convoluted plans to feed because feeding isn't really the goal. So the reason Ms. Lane spilled her drink on Clark was so she could see the 'S' beneath his white shirt and drag him into the nearest broom closet having discovered his secret identity. (Honestly Lane was a filler name and the rest of this less convoluted than I wanted scenario leapt fully formed from mah brain.) It gives you a lot of leeway for really absurd couples hooking up.

Or alternatively it's some sort of cupid and they literally exist to get people together, in particular people who have no reason to get together but God (or whatever) has a very specific plan for how the son of Martha and Thomas Wayne will help an alien save the world from a rock monster. (or whatever)